Studio wanted

Hi, I am looking for a suitable space for a studio which has some "pavement profile or frontage" i.e. you can see in to it when passing rather than being tucked away in a yard, artspace building or up stairs. Need people to find it easily and not be intimidated by lots of blank offices or edgy alleys! Ideally looking for short (under 2 years) or flexible lease, license or assignment of exiting business. Have been around lots of property brokers/agents but nothing quite right yet and not much help (any recommendations?). Area: Old Kent Road, Elephant, Walworth ideally but willing to look wider (and have). Size: approx 350-600 square feet but needs essentially to be a 20-30 foot by about 15 foot rectangle suitable for setting up lights etc. Willing to consider sharing with the right business.
Many thanks
Java